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AM/FM Stereo Tuner
The decision to design the AM/FM Stereo Tuner around classic Heathkit designs from the
1960s is a recognition of the high-quality tube circuits of that era. It is also a recognition of the
realities of finding the necessary parts to build a tube-based tuner today. Key components of this
tuner have been repurposed from old tube tuners because the parts are simply not available today
as new components. The parts in question are the tuning capacitors and radio frequency (RF) coils
and transformers. Regrettably, such devices are no longer manufactured for tube-based systems
and the choice of new-old-stock (NOS) components is exceedingly limited. Fortunately, there
remains a supply of old (typically non-functioning) radios to serve as a source of spare parts.
(These sources, regrettably, will not last forever, of course.)
Shields are provided for four tubes in the FM tuner section. While not strictly required, they
are recommended. The photos on the this page show the tuner with and without the shields.
The AM/FM Stereo Tuner is intended for appointment listening. Turn it on and dial-in your
favorite station. Enjoy audio as it should be heard.
Summary of Contents for AM/FM Stereo Tuner 2012
Page 1: ...WhitakerAudio AM FM StereoTuner User and Assembly Manual...
Page 11: ...11 AM FM Stereo Tuner Figure 1 1 Schematic diagram of the AM tuner section...
Page 17: ...17 AM FM Stereo Tuner Figure 1 2 Schematic diagram of the FM tuner section...
Page 34: ...34 WhitakerAudio Figure 3 1 Component layout for the AM tuner PWB...
Page 36: ...36 WhitakerAudio Figure 3 3 Component layout for the FM tuner PWB...
Page 69: ...69 AM FM Stereo Tuner Set the FM tuner board aside it will be used later b...
Page 101: ...101 AM FM Stereo Tuner Figure 5 11 Chassis view of the AM FM Stereo Tuner...
Page 159: ...159 AM FM Stereo Tuner...
Page 160: ...WhitakerAudio AM FM StereoTuner...
